The site of the highway tunnel being dug along the Seattle waterfront is shown as cars approach the Alaskan Way Viaduct, Tuesday, Feb. 11, 2014 in Seattle. The contracting team hired to dig the tunnel... more

The site of the highway tunnel being dug along the Seattle waterfront is shown as cars approach the Alaskan Way Viaduct, Tuesday, Feb. 11, 2014 in Seattle. The contracting team hired to dig the tunnel told the Washington state Transportation Department Monday evening that it will take months to fix broken seals on the world's largest tunneling machine, which is currently 60 feet underground, officials said in a statement. (AP Photo/Ted S. Warren) less